SELENIA METALLI manufactures more than 400 models of hot forged Neckrings and Bungs, for all the main world cylinders and gas tanks producers in domestic and industrial field.

Its technology, optimized throughout the years, allows to produce every type of threading (by screw cutting tool or by thread rolling tool) according to the international standards, and every kind of hot pressed item even by minimum tolerances (0,2 - 0,3 mm.) without any mechanical working of external metal turnings and at very competitive prices.